Check Valve
Check Valves designed to maintain safe, controlled water flow within high-pressure systems. These components prevent backflow, protect pumps, and ensure that water moves in the correct direction during operation, making them essential for reliable and efficient performance in demanding cleaning environments.
As an important part of modern pressure washing setups, check valves help safeguard equipment from pressure spikes, contamination, and unintended reverse flow. Built from durable, high-pressure-rated materials, they provide consistent sealing and dependable performance, whether you're running residential, commercial, or industrial cleaning equipment.
This collection is ideal for pressure washing professionals who want to improve system reliability, reduce wear on pumps and hoses, and maintain smooth, uninterrupted water delivery. With proper installation, check valves help extend equipment lifespan while supporting safer, more predictable operation.
Use these check valves as part of a complete pressure washing workflow to enhance system protection, maintain consistent pressure, and ensure optimal performance. With the right flow-control components in place, your equipment will operate more efficiently and deliver professional-grade cleaning results with every job.
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The Suttner ST-264 BSP Check Valve 200264600 is a compact, high-pressure inline check valve designed to prevent backflow in pressure systems up to 5800 PSI. Built from stainless steel, this valve is ideal for harsh environments and can be installed in either horizontal or vertical positions, offering flexible integration across a variety of system designs.
This model includes Viton O-rings for superior chemical and heat resistance, and has an opening pressure of just 2 PSI, enabling smooth, low-resistance flow in delicate or low-pressure startup conditions. The 1/4" BSPP female threading on both ends ensures compatibility with standard British pipe thread configurations.
Applications:
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Industrial fluid control systems
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Pressure washer bypass protection
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Backflow prevention in high-pressure lines
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Horizontal and vertical flow installations
Features:
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Stainless steel body for corrosion resistance and durability
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Opening pressure of only 2 PSI
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Can be installed vertically or horizontally
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Viton O-rings provide excellent chemical resistance
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1/4" BSPP threading for British-standard systems
The ST-264 BSP valve from Suttner is a reliable, high-pressure solution for maintaining directional flow control and protecting system components from reverse pressure.
Specs:
Product Type: Check Valve
Category: Valves
Brand: Suttner
Part Number: 200264600
Material: Stainless Steel
Pressure: 5800 PSI
Temperature: 248°F
Threading In: 1/4" FBSP
Threading Out: 1/4" FBSP
Weight: 0.25 lb
The Storm 1/2 NPTF Black Check Valve is designed for seamless compatibility with the Softwash Storm™ system, a modular, professional-grade solution trusted by contractors. Engineered for durability and reliable performance, this check valve ensures smooth system operation while supporting the Storm’s flexible, expandable design. Whether you’re starting small or scaling up, this component helps deliver consistent results and long-term value for your softwashing business.
The Suttner ST-264 BSP Check Valve 200264620 is a compact, high-pressure stainless steel valve designed to prevent reverse flow in pressure systems. Rated for up to 5800 PSI, this check valve is suitable for both horizontal and vertical installations, making it versatile for a wide range of cleaning and fluid control setups.
Built with Viton® O-rings and an opening pressure of just 2 PSI, the ST-264 ensures responsive flow control while maintaining high chemical resistance and durability. It is engineered to meet the demands of professional applications in harsh environments.
Equipped with 3/8" Female BSP (British Standard Pipe) threading on both inlet and outlet, this valve is fully compatible with European and BSP-threaded system configurations.
Applications:
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Preventing backflow in pressure washing systems
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Fluid control in chemical, industrial, and washdown setups
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Suitable for vertical and horizontal mounting positions
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Ideal for corrosive or high-pressure applications
Features:
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Compact BSP-threaded stainless steel check valve
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Operating pressure up to 5800 PSI
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Viton® O-rings for chemical and heat resistance
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2 PSI opening pressure for smooth flow activation
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Mounts in horizontal or vertical orientation
Suttner check valves are built for performance and precision, offering long-lasting reliability in high-pressure systems worldwide.
Specs:
Product Type: Check Valve
Category: Valves
Brand: Suttner
Part Number: 200264620
Material: Stainless Steel
Pressure: 5800 PSI
Temperature: 248° F
Threading In: 3/8" F BSP
Threading Out: 3/8" F BSP
Weight: 0.27 lb
The Mosmatic 90.118 Check Valve is a precision-engineered stainless steel valve designed for reliable one-way flow in fluid systems that demand low opening pressure and robust construction. It features …œ" NPTF inlet and outlet threads, making it an ideal solution for fluid applications that require secure and consistent flow direction.
With a durable 1" diameter and 2.3" overall length, this check valve can handle operating pressures up to 4000 PSI and water temperatures of up to 200°F. Its hard spring mechanism delivers low-pressure operation, opening at just 1.5 PSI and closing at 2 PSI€”perfect for sensitive systems where minimal flow resistance is essential. Built for performance, this valve ensures dependable backflow prevention in even the most demanding environments.
Applications
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Low-pressure water systems
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High-pressure car wash and detailing equipment
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Pressure washers and pump systems
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Industrial water and chemical flow control
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Water purification and treatment plants
Features
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Stainless steel construction for enhanced durability and corrosion resistance
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…œ" NPTF IN/OUT threading for standard system compatibility
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Compact profile: 1" diameter, 2.3" length
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Rated for 4000 PSI and 200°F operation
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Low-pressure spring: 1.5 PSI opening, 2 PSI closing
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Delivers reliable one-way flow and effective backflow protection
Specs
Material Type: Stainless Steel
Temperature: 200°F
Opening Pressure: 1.5 psi
Closing Pressure: 2 psi
Pressure: 4000 psi
Thread In: 3/8" NPTF
Thread Out: 3/8" NPTF
Diameter (D): 1"
Nominal Width (NW): 1/4"
Length: 2.3"
Weight: 0.3 lbs
The Mosmatic 90.117 Check Valve is a high-quality stainless steel valve engineered to provide reliable, low-resistance backflow prevention in sensitive fluid systems. It features a …œ" NPTF inlet and a ¼" NPTF outlet, designed to integrate seamlessly into high-performance applications that require precision flow control.
Compact in design with a 1" diameter and 2.2" length, this check valve supports pressures up to 4000 PSI and water temperatures as high as 200°F. Its internal hard spring activates at a low 1.5 PSI and closes at 2 PSI€”ideal for operations where maintaining minimal opening pressure is critical to system efficiency and accuracy.
Applications
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Low-pressure water delivery systems
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Reverse osmosis and water filtration units
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Pressure washing and detailing equipment
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Industrial pump and fluid control setups
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Chemical processing and dosing systems
Key Features
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Built from durable stainless steel for long-term corrosion resistance
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…œ" NPTF IN to ¼" NPTF OUT for versatile system connections
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Slim, compact body: 1" diameter, 2.2" length
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Withstands up to 4000 PSI pressure and 200°F temperature
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Low opening spring: activates at 1.5 PSI, closes at 2 PSI
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Designed for precise, one-way flow control in sensitive systems
Specs
Material Type: Stainless Steel
Temperature: 200°F
Opening Pressure: 1.5 psi
Closing Pressure: 2 psi
Pressure: 4000 psi
Thread In: 3/8" NPTF
Thread Out: 1/4" NPTF
Diameter (D): 1"
Nominal Width (NW): 1/4"
Length: 2.2"
Weight: 0.2 lbs
The Mosmatic 90.116 Check Valve is engineered for precision and durability in demanding water and fluid handling systems. Made of corrosion-resistant stainless steel, this valve is designed for systems requiring low opening pressure and robust performance. It features a ¼" NPTF IN thread and a …œ" NPTF OUT thread, allowing versatile integration into diverse configurations.
With a 1" diameter and extended 2.2" length, this valve is optimized for high flow capacity and low-resistance activation. It operates at an opening pressure of just 1.5 PSI and closes at 2 PSI€”ideal for sensitive systems where minimal pressure drop is critical. Rated for up to 4000 PSI and 200°F, the Mosmatic 90.116 delivers secure and efficient one-way flow control in both commercial and industrial environments.
Applications
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Low-pressure water and fluid systems
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Car wash and pressure cleaning equipment
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Water treatment and dosing systems
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High-precision industrial plumbing
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Reverse osmosis and filtration units
Features
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Stainless steel construction for superior corrosion resistance
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¼" NPTF IN to …œ" NPTF OUT threading for flexible connectivity
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Extended body: 1" diameter, 2.2" length
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Handles up to 4000 PSI pressure and 200°F water temperature
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Low-pressure spring: 1.5 PSI opening, 2 PSI closing
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Ensures one-way flow with minimal resistance for sensitive systems
Specs
Material Type: Stainless Steel
Temperature: 200°F
Opening Pressure: 1.5 psi
Closing Pressure: 2 psi
Pressure: 4000 psi
Thread In: 1/4" NPTF
Thread Out: 3/8" NPTF
Diameter (D): 1"
Nominal Width (NW): 1/4"
Length: 2.2"
Weight: 0.2 lbs
The Mosmatic 90.115 Check Valve is a stainless steel, high-efficiency flow control component designed for applications that require low opening pressure and high durability. With a ¼" NPTF IN and OUT thread configuration, this valve provides reliable backflow protection in systems demanding accurate low-pressure activation.
Built to endure tough operating environments, it measures 3/4" in diameter and 2.1" in length. This check valve operates with a soft-opening hard spring calibrated to 1.5 PSI opening and 2 PSI closing pressure€”ideal for sensitive systems needing low-resistance flow. It withstands pressures up to 4000 PSI and water temperatures of up to 200°F, making it a dependable choice for precision fluid systems.
Applications
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Low-pressure fluid delivery systems
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Water filtration and purification systems
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Car wash and pressure washer applications
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Industrial pump and plumbing setups
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Chemical and water dosing systems
Features
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Made from high-quality stainless steel for corrosion resistance
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¼" NPTF IN/OUT thread compatibility
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Compact form factor: 3/4" diameter, 2.1" length
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Supports up to 4000 PSI and 200°F max temperature
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Low-pressure spring: 1.5 PSI opening, 2 PSI closing
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Optimized for sensitive backflow prevention in high-precision systems
Specs
Material Type: Stainless Steel
Temperature: 200°F
Opening Pressure: 1.5 psi
Closing Pressure: 2 psi
Pressure: 4000 psi
Thread In: 1/4" NPTF
Thread Out: 1/4" NPTF
Diameter (D): 3/4"
Nominal Width (NW): 1/4"
Length: 2.1"
Weight: 0.2 lbs
The Mosmatic 90.114 Check Valve is a high-performance stainless steel valve built for consistent and secure backflow prevention in high-pressure fluid systems. Featuring a …œ" NPTF inlet and …œ" NPTF outlet, this valve is engineered for compatibility with a wide range of industrial and commercial applications.
With a rugged 1" diameter and 2.3" overall length, this valve offers compact reliability without compromising strength. It handles up to 4000 PSI of pressure and endures water temperatures up to 200°F. A hardened internal spring ensures efficient one-way flow, with an opening pressure of 14 PSI and closing pressure of 20 PSI€”maintaining stable performance under demanding conditions.
Applications
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High-pressure water systems
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Pressure washers and pump protection
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Industrial cleaning equipment
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Car wash systems
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Water filtration and treatment setups
Features
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Constructed from premium stainless steel for corrosion resistance and longevity
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…œ" NPTF IN/OUT threads for seamless integration
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Compact body: 1" diameter, 2.3" length
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Withstands 4000 PSI of pressure and 200°F of temperature
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Hard spring operation: 14 PSI opening, 20 PSI closing
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Provides secure, one-way flow and prevents backflow effectively
Specs
Material Type: Stainless Steel
Temperature: 200°F
Opening Pressure: 14 psi
Closing Pressure; 20 psi
Pressure: 4000 psi
Thread In: 3/8" NPTF
Thread Out: 3/8" NPTF
Diameter (D): 1"
Nominal Width (NW): 1/4"
Length: 2.3"
Weight: 0.3 lbs
The Mosmatic 90.113 Check Valve delivers dependable performance and long-lasting durability in high-pressure water systems. Made of corrosion-resistant stainless steel, this check valve is engineered for secure one-way flow with a …œ" NPTF IN thread and a ¼" NPTF OUT thread, offering easy integration with various system configurations.
With a robust build featuring a 1" diameter and a total length of 2.2", the valve supports pressures up to 4000 PSI and water temperatures up to 200°F. Its internal hard spring ensures reliable operation, activating at 14 PSI and closing at 20 PSI to prevent reverse flow and maintain consistent performance under stress.
Applications
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Pressure washer and pump systems
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Car wash equipment
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Industrial fluid control
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High-pressure water circuits
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Water filtration and backflow protection systems
Features
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Stainless steel construction for corrosion resistance and durability
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…œ" NPTF IN to ¼" NPTF OUT threading for system versatility
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Compact profile: 1" diameter, 2.2" length
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Rated for 4000 PSI and 200°F
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Hard spring mechanism: 14 PSI opening, 20 PSI closing
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Designed for secure backflow prevention in high-pressure systems
Specs
Material Type: Stainless Steel
Temperature: 200°F
Opening Pressure: 14 psi
Closing Pressure; 20 psi
Pressure: 4000 psi
Thread In: 3/8" NPTF
Thread Out: 1/4" NPTF
Diameter (D): 1"
Nominal Width (NW): 1/4"
Length: 2.2"
Weight: 0.2 lbs
The Mosmatic 90.112 Check Valve is a precision-engineered stainless steel valve designed for efficient backflow prevention in high-pressure systems. Built with durability and performance in mind, this valve features a ¼" NPTF IN thread and a …œ" NPTF OUT thread, allowing versatile integration across various fluid handling setups.
Measuring 1" in diameter and 2.2" in length, this compact yet robust valve operates under pressures up to 4000 PSI and withstands water temperatures up to 200°F. Its hardened internal spring ensures optimal performance, with an opening pressure of 14 PSI and closing pressure of 20 PSI€”delivering secure and reliable one-way flow control in even the most demanding environments.
Applications
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High-pressure water systems
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Car wash installations
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Pressure washers and pumps
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Industrial and commercial fluid control
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Water filtration and treatment equipment
Features
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Constructed from high-grade stainless steel for long-term durability
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¼" NPTF IN to …œ" NPTF OUT threading for flexible system compatibility
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Compact design with 1" diameter and 2.2" length
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Supports up to 4000 PSI operating pressure
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Resists temperatures up to 200°F
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Features a hard spring with 14 PSI opening and 20 PSI closing pressure
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Ensures efficient one-way flow and backflow prevention
Specs
Material Type: Stainless Steel
Temperature: 200°F
Opening Pressure: 14 psi
Closing Pressure; 20 psi
Pressure: 4000 psi
Thread In: 1/4" NPTF
Thread Out: 3/8" NPTF
Diameter (D): 1"
Nominal Width (NW): 1/4"
Length: 2.2"
Weight: 0.2 lbs
The Mosmatic 90.111 Check Valve is a premium-grade stainless steel component engineered for reliable backflow prevention in high-pressure applications. Designed with precision, this valve features a ¼" NPTF IN to ¼" NPTF OUT threading, offering seamless integration into a wide range of industrial and commercial fluid systems.
With a compact diameter of ¾" and an overall length of 2.1", the valve is built to perform under demanding conditions. It includes a hard spring mechanism with an opening pressure of 14 PSI and a closing pressure of 20 PSI. This check valve is rated to withstand operating pressures up to 4000 PSI and temperatures reaching 200°F, making it a trusted choice for maintaining system integrity in high-pressure environments.
Applications
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High-pressure cleaning systems
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Car wash systems
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Industrial fluid systems
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Water treatment and filtration units
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Pressure washer and pump protection
Key Features
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Durable stainless steel construction for corrosion resistance
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¼" NPTF IN and OUT threads for easy connection
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Compact ¾" diameter and 2.1" length
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Handles up to 4000 PSI and 200°F water temperature
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Precision-engineered hard spring: 14 PSI opening, 20 PSI closing
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Ensures one-way flow and prevents backflow in fluid systems
Specs
Material Type: Stainless Steel
Temperature: 200°F
Opening Pressure: 14 psi
Closing Pressure; 20 psi
Pressure: 4000 psi
Thread In: 1/4" NPTF
Thread Out: 1/4" NPTF
Diameter (D): ¾"
Nominal Width (NW): 1/4"
Length: 2.1"
Weight: 0.2 lbs
Mosmatic Check Valve – 90.038 – 3", IN 1/4" NPTF x OUT 3/8" NPTF – Brass – 4000 psi – Soft Spring
$143.00 USD
Unit price perMosmatic Check Valve – 90.038 – 3", IN 1/4" NPTF x OUT 3/8" NPTF – Brass – 4000 psi – Soft Spring
$143.00 USD
Unit price perThe Mosmatic 90.038 Check Valve is a brass-bodied valve engineered for applications requiring low opening pressure, made possible by its soft spring (~1.5 psi opening, ~2 psi closing). With a 1/4" NPTF inlet and 3/8" NPTF outlet, this model is ideal for fluid systems that need a smooth pressure transition and anti-backflow protection.
Its 3" length offers added flow stability, while the 4000 psi rating makes it suitable for general-purpose fluid and pneumatic installations.
Applications:
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Car wash and cleaning systems
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Light-duty spray and dosing lines
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Low-resistance backflow prevention
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Pneumatic and fluid step-up configurations
Features:
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Brass construction for reliability and economy
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Soft spring for low-pressure response
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1/4" NPTF inlet to 3/8" NPTF outlet
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Compact 3" form factor
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Pressure rated to 4000 psi
Specs
Material: Brass
Max Pressure: 4000 psi
Opening Pressure: ~1.5 psi
Closing Pressure: ~2 psi
Inlet: 1/4" NPTF
Outlet: 3/8" NPTF
Length: 3"
Nominal Width: 1/4"
Temperature: 200°F
Weight: 0.4 lbs
Mosmatic Check Valve – 90.058 – 3", IN 1/4" NPTF x OUT 3/8" NPTF – INOX – 5000 psi – Soft Spring
$158.00 USD
Unit price perMosmatic Check Valve – 90.058 – 3", IN 1/4" NPTF x OUT 3/8" NPTF – INOX – 5000 psi – Soft Spring
$158.00 USD
Unit price perThe Mosmatic 90.058 Check Valve is a stainless steel (INOX) valve designed for low-pressure activation, ideal for sensitive fluid control systems. Featuring a soft spring, the valve opens at ~1.5 psi and closes around 2 psi, enabling smooth, low-resistance flow while preventing backflow.
With a 1/4" NPTF inlet and a 3/8" NPTF outlet, this model offers a stepped connection and supports pressures up to 5000 psi—perfect for high-demand environments that still require soft-flow performance.
Applications:
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Spray and chemical dosing systems
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Industrial fluid control
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Pneumatic or compressed air equipment
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Systems requiring step-up thread configuration
Features:
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INOX stainless steel body
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Soft spring for gentle flow activation
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Rated to 5000 psi
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Threading: 1/4" NPTF inlet, 3/8" NPTF outlet
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3" body length for steady flow
Specs
Material: Stainless Steel (INOX)
Max Pressure: 5000 psi
Opening Pressure: ~1.5 psi
Closing Pressure: ~2 psi
Inlet: 1/4" NPTF
Outlet: 3/8" NPTF
Length: 3"
Nominal Width: 1/4"
Temperature: 200°F
Weight: 0.4 lbs
Mosmatic Check Valve – 90.037 – 2.4", IN 1/4" NPTF x OUT 1/4" NPTF – Brass – 4000 psi – Soft Spring
$143.00 USD
Unit price perMosmatic Check Valve – 90.037 – 2.4", IN 1/4" NPTF x OUT 1/4" NPTF – Brass – 4000 psi – Soft Spring
$143.00 USD
Unit price perThe Mosmatic 90.037 Check Valve is a brass one-way valve equipped with a soft spring for low-opening pressure performance, activating at just ~1.5 psi. Its compact 2.4" design and 1/4" NPTF inlet/outlet make it ideal for use in fluid and air systems where smooth, low-resistance flow is essential.
Rated for up to 4000 psi, the 90.037 is an excellent choice for car wash, misting, or dosing systems that operate at moderate pressure but require precise flow control.
Applications:
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Low-pressure cleaning and rinsing systems
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Pneumatic tools and lines
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Chemical and fluid dosing setups
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Compact industrial installations
Features:
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Brass body with corrosion resistance
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Soft spring for gentle activation (~1.5 psi)
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1/4" NPTF ports
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4000 psi pressure capacity
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Lightweight and compact design
Specs
Material: Brass
Max Pressure: 4000 psi
Opening Pressure: ~1.5 psi
Closing Pressure: ~2 psi
Inlet / Outlet: 1/4" NPTF
Length: 2.4"
Nominal Width: 1/4"
Temperature: 200°F
Weight: 0.4 lbs
Mosmatic Check Valve – 90.057 – 2.4", IN 1/4" NPTF x OUT 1/4" NPTF – INOX – 5000 psi – Soft Spring
$158.00 USD
Unit price perMosmatic Check Valve – 90.057 – 2.4", IN 1/4" NPTF x OUT 1/4" NPTF – INOX – 5000 psi – Soft Spring
$158.00 USD
Unit price perThe Mosmatic 90.057 Check Valve is a stainless steel (INOX) low-pressure one-way valve featuring a soft spring, allowing for activation at approximately 1.5 psi and closing at ~2 psi. This makes it ideal for sensitive fluid systems and precise flow control, while still supporting pressures up to 5000 psi.
With 1/4" NPTF inlet and outlet, this compact 2.4" valve is a versatile solution for applications requiring low resistance and maximum durability.
Applications:
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Spray and misting systems
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Low-pressure dosing and detergent lines
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Compressed air and gas systems
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Fluid transfer with minimal backpressure
Features:
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INOX stainless steel body
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Soft spring (opens at ~1.5 psi)
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Rated for high pressure up to 5000 psi
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1/4" NPTF threaded inlet and outlet
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Compact and corrosion-resistant 2.4" design
Specs
Material: Stainless Steel (INOX)
Max Pressure: 5000 psi
Opening Pressure: ~1.5 psi
Closing Pressure: ~2 psi
Inlet / Outlet: 1/4" NPTF
Length: 2.4"
Nominal Width: 1/4"
Temperature: 200°F
Weight: 0.4 lbs
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